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Finding the Fourth Proportional to 289,255.20, 433,882.80 and 263,450.40

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Solution

The fourth proportional to 289,255.20, 433,882.80 and 263,450.40 is: 395,175.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,255.20 : 433,882.80 = 263,450.40 : x
  2. Step 2: Convert to fraction form
    289,255.20/433,882.80 = 263,450.40/x
  3. Step 3: Cross multiply
    289,255.20x = 433,882.80 × 263,450.40
  4. Step 4: Simplify right side
    289,255.20x = 114,306,597,213.12
  5. Step 5: Solve for x
    x = 114,306,597,213.12/289,255.20
  6. Step 6: Final answer
    x = 395,175.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.